Essex

Essex Designed AP Racing Radi-CAL Competition Brake Kit (Front 9661/372mm)- Porsche 997, 981, 991, 718

Regular price $4,399.00 Save $-4,399.00
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Complete front Essex Designed AP Racing Radi-CAL Competition Brake Kit fits all 997.1 and 997.2 except for GT3 and 997.1 base. Also fits 991.1 and 991.2 Carrera S/4S/GTS/Targa 4 GTS/ T, 981 Boxster and Cayman, and 718 Boxster and Cayman.

  • Features AP Racing CP9661 Radi-CAL six piston calipers
  • No unsprung weight penalty vs. OEM despite the additional pistons (6 vs. 4) and much larger disc
  • Huge array of brake pad options from all major pad manufacturers
  • 372x34mm, 84 vane AP Racing disc
  • Every component designed to resist the heat of extended track sessions
  • Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system
  • Designed to work with OEM rear brakes or our Essex/AP Racing rear brake kits 

 

Advantages Over OEM Brake System

Our CP9661/372mm Radi-CAL Competition Brake Kit offers our customers the following advantages over the OEM brake system:

  • Eliminates the need to remove caliper for front pad change
  • No unsprung weight penalty vs. OEM despite the additional pistons and much larger disc
  • AP Racing Radi-CAL calipers are the stiffest, lightest, and most technologically advanced calipers available at any price
  • CP9661 calipers use a 18mm thick, commonly available brake pad shape
  • Ventilated, domed back, stainless steel pistons keep heat out of the brake fluid and provide an ultra-firm pedal
  • Mitigation of pad knockback via anti-knockback springs behind the caliper pistons
  • Anodized caliper finish that is resistant to wear and deterioration at elevated temperatures
  • Stainless steel caliper hardware for a long caliper service life under frequent pad change conditions
  • High temperature, low drag seals that will hold up to track temps= less rebuilding and longer service life
  • No dust boots to burn up 
  • Simple pad change with two bolts or quick-change spring clip, no caliper removal required
  • Lifetime professional caliper rebuilding support by Essex (at a fee)- pull off your calipers, send them to us, we clean, inspect, and rebuild them
  • Available disc burnishing service ensures that your kit arrives ready to be installed and driven hard immediately
  • Championship winning, 72 vane, fully floating, AP Racing J Hook racing discs with 12 attachment points to hat
  • Anti-knockback/anti-rattle disc attachment hardware
  • Replacement iron disc rings available at an extremely competitive replacement price ($359 each).
  • Disc metallurgy specifically designed to handle the temps typically seen on track offer a long service life
  • Highest quality, Spiegler stainless steel brake line with clear sheath that reduces compliance over OEM rubber design

Model Year


201

2013-2015

2016+



911 (997)

Boxster/Cayman 981

Boxster/Cayman 718


Essex/AP BBK

GTS

S & GTS

S

Caliper

CP9661-2S4L/3S4L




Weight no Pads

6.2 lbs.

6.5 lbs.

6.5 lbs.

9.0 lbs.


27.0mm x 2




Piston Sizes

28.6mm x 2





31.8mm x 2




Piston Area

40.1cm^2




Inlet Thread

M10x1.0




Mounting Type

Radial




Mtg. Centers

180mm




Mtg. Offset

42mm




Pad thickness

18mm




Disc

CP6084-




Type

2-piece floating

One-piece

One-piece drilled

One-piece drilled

Weight

19.1 lbs.

20.5 lbs.

20.2 lbs.

21.7 lbs.

Diameter

372mm

330mm

330mm

330mm

Thickness

34mm

28mm

28mm

34mm

Radial Depth

54mm




No. of Vanes

84
30 split, 30 solid 30 split, 30 solid 30 split, 30 solid
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Front 9661/372mm)- Porsche 997, 981, 991, 718
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Front 9661/372mm)- Porsche 997, 981, 991, 718
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Front 9661/372mm)- Porsche 997, 981, 991, 718
Essex Designed AP Racing Radi-CAL Competition Brake Kit (Front 9661/372mm)- Porsche 997, 981, 991, 718